Retardation of surface corrosion of biodegradable magnesium-based materials by aluminum ion implantation

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Author(s)

  • Guosong Wu
  • Ruizhen Xu
  • Kai Feng
  • Shuilin Wu
  • Zhengwei Wu
  • Guangyong Sun
  • Gang Zheng
  • Guangyao Li

Detail(s)

Original languageEnglish
Pages (from-to)7651-7657
Journal / PublicationApplied Surface Science
Volume258
Issue number19
Publication statusPublished - 15 Jul 2012

Abstract

Aluminum ion implantation is employed to modify pure Mg as well as AZ31 and AZ91 magnesium alloys and their surface degradation behavior in simulated body fluids is studied. Polarization tests performed in conjunction with scanning electron microscopy (SEM) reveal that the surface corrosion resistance after Al ion implantation is improved appreciably. This enhancement can be attributed to the formation of a gradient surface structure with a gradual transition from an Al-rich oxide layer to Al-rich metal layer. Compared to the high Al-content magnesium alloy (AZ91), a larger reduction in the degradation rate is achieved from pure magnesium and AZ31. Our results reveal that the surface corrosion resistance of Mg alloys with no or low Al content can be improved by Al ion implantation. © 2012 Elsevier B.V. All rights reserved.

Research Area(s)

  • Biomaterials, Corrosion, Ion implantation, Magnesium alloys, Surface

Citation Format(s)

Retardation of surface corrosion of biodegradable magnesium-based materials by aluminum ion implantation. / Wu, Guosong; Xu, Ruizhen; Feng, Kai; Wu, Shuilin; Wu, Zhengwei; Sun, Guangyong; Zheng, Gang; Li, Guangyao; Chu, Paul K.

In: Applied Surface Science, Vol. 258, No. 19, 15.07.2012, p. 7651-7657.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal